Fixed Bar Blade Filter Grille 935FG-20X18 Finish:Bronze 3 cone steel diffuser with

3 cone steel diffuser with hinged core for easy duct access

1/2" spacing dual angular louvers for strength and maximum free area

Filter retention tabs

Double deflection transition box mount spiral pipe grille

Hand operated lever for easy filter access and cleaning

Fixed Bar Blade Filter Grille 935FG-20X18 Finish:Bronze 3 cone steel diffuser withStandard Features * 45 degree fixed blades parallel to the longest dimension * Hand operated lever for easy filter access * Holds up to 2" thick standard filter (not included) * Removable face for easy cleaning and maintenance * Filter door hinges parallel to longest side * 4 way reversible door on square sizes * 2 way reversible door on rectangular sizes * Filter retention tabs * Concealed mounting holes * Soft White Options * SP935FG 4 holds 4" deep